From 2a424990170b7e9d0abfea94e5a441c580c33d29 Mon Sep 17 00:00:00 2001 From: Paul Brook Date: Mon, 16 Nov 2009 17:06:43 +0000 Subject: [PATCH] LAN9118 emulation Add SMSC LAN9118 ethernet emulation. Signed-off-by: Paul Brook --- Makefile.target | 1 + hw/devices.h | 3 + hw/lan9118.c | 1093 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 1097 insertions(+) create mode 100644 hw/lan9118.c diff --git a/Makefile.target b/Makefile.target index 7068dc5..91aa4a2 100644 --- a/Makefile.target +++ b/Makefile.target @@ -288,6 +288,7 @@ obj-arm-y += framebuffer.o obj-arm-y += syborg.o syborg_fb.o syborg_interrupt.o syborg_keyboard.o obj-arm-y += syborg_serial.o syborg_timer.o syborg_pointer.o syborg_rtc.o obj-arm-y += syborg_virtio.o +obj-arm-y += lan9118.o obj-sh4-y = shix.o r2d.o sh7750.o sh7750_regnames.o tc58128.o obj-sh4-y += sh_timer.o sh_serial.o sh_intc.o sh_pci.o sm501.o serial.o diff --git a/hw/devices.h b/hw/devices.h index 156bde2..0ac561d 100644 --- a/hw/devices.h +++ b/hw/devices.h @@ -6,6 +6,9 @@ /* smc91c111.c */ void smc91c111_init(NICInfo *, uint32_t, qemu_irq); +/* lan9118.c */ +void lan9118_init(NICInfo *, uint32_t, qemu_irq); + /* tsc210x.c */ uWireSlave *tsc2102_init(qemu_irq pint); uWireSlave *tsc2301_init(qemu_irq penirq, qemu_irq kbirq, qemu_irq dav); diff --git a/hw/lan9118.c b/hw/lan9118.c new file mode 100644 index 0000000..6394f3a --- /dev/null +++ b/hw/lan9118.c @@ -0,0 +1,1093 @@ +/* + * SMSC LAN9118 Ethernet interface emulation + * + * Copyright (c) 2009 CodeSourcery, LLC. + * Written by Paul Brook + * + * This code is licenced under the GNU GPL v2 + */ + +#include "sysbus.h" +#include "net.h" +#include "devices.h" +/* For crc32 */ +#include + +//#define DEBUG_LAN9118 + +#ifdef DEBUG_LAN9118 +#define DPRINTF(fmt, ...) \ +do { printf("lan9118: " fmt , ## __VA_ARGS__); } while (0) +#define BADF(fmt, ...) \ +do { hw_error("lan9118: error: " fmt , ## __VA_ARGS__);} while (0) +#else +#define DPRINTF(fmt, ...) do {} while(0) +#define BADF(fmt, ...) \ +do { fprintf(stderr, "lan9118: error: " fmt , ## __VA_ARGS__);} while (0) +#endif + +#define CSR_ID_REV 0x50 +#define CSR_IRQ_CFG 0x54 +#define CSR_INT_STS 0x58 +#define CSR_INT_EN 0x5c +#define CSR_BYTE_TEST 0x64 +#define CSR_FIFO_INT 0x68 +#define CSR_RX_CFG 0x6c +#define CSR_TX_CFG 0x70 +#define CSR_HW_CFG 0x74 +#define CSR_RX_DP_CTRL 0x78 +#define CSR_RX_FIFO_INF 0x7c +#define CSR_TX_FIFO_INF 0x80 +#define CSR_PMT_CTRL 0x84 +#define CSR_GPIO_CFG 0x88 +#define CSR_GPT_CFG 0x8c /* TODO */ +#define CSR_GPT_CNT 0x90 /* TODO */ +#define CSR_WORD_SWAP 0x98 +#define CSR_FREE_RUN 0x9c +#define CSR_RX_DROP 0xa0 +#define CSR_MAC_CSR_CMD 0xa4 +#define CSR_MAC_CSR_DATA 0xa8 +#define CSR_AFC_CFG 0xac +#define CSR_E2P_CMD 0xb0 +#define CSR_E2P_DATA 0xb4 + +/* IRQ_CFG */ +#define IRQ_EN 0x00000100 +#define IRQ_POL 0x00000010 +#define IRQ_TYPE 0x00000001 + +/* INT_STS/INT_EN */ +#define SW_INT 0x80000000 +#define TXSTOP_INT 0x02000000 +#define RXSTOP_INT 0x01000000 +#define RXDFH_INT 0x00800000 +#define TX_IOC_INT 0x00200000 +#define RXD_INT 0x00100000 +#define GPT_INT 0x00080000 +#define PHY_INT 0x00040000 +#define PME_INT 0x00020000 +#define TXSO_INT 0x00010000 +#define RWT_INT 0x00008000 +#define RXE_INT 0x00004000 +#define TXE_INT 0x00002000 +#define TDFU_INT 0x00000800 +#define TDFO_INT 0x00000400 +#define TDFA_INT 0x00000200 +#define TSFF_INT 0x00000100 +#define TSFL_INT 0x00000080 +#define RXDF_INT 0x00000040 +#define RDFL_INT 0x00000020 +#define RSFF_INT 0x00000010 +#define RSFL_INT 0x00000008 +#define GPIO2_INT 0x00000004 +#define GPIO1_INT 0x00000002 +#define GPIO0_INT 0x00000001 +#define RESERVED_INT 0x7c001000 + +#define MAC_CR 1 +#define MAC_ADDRH 2 +#define MAC_ADDRL 3 +#define MAC_HASHH 4 +#define MAC_HASHL 5 +#define MAC_MII_ACC 6 +#define MAC_MII_DATA 7 +#define MAC_FLOW 8 +#define MAC_VLAN1 9 /* TODO */ +#define MAC_VLAN2 10 /* TODO */ +#define MAC_WUFF 11 /* TODO */ +#define MAC_WUCSR 12 /* TODO */ + +#define MAC_CR_RXALL 0x80000000 +#define MAC_CR_RCVOWN 0x00800000 +#define MAC_CR_LOOPBK 0x00200000 +#define MAC_CR_FDPX 0x00100000 +#define MAC_CR_MCPAS 0x00080000 +#define MAC_CR_PRMS 0x00040000 +#define MAC_CR_INVFILT 0x00020000 +#define MAC_CR_PASSBAD 0x00010000 +#define MAC_CR_HO 0x00008000 +#define MAC_CR_HPFILT 0x00002000 +#define MAC_CR_LCOLL 0x00001000 +#define MAC_CR_BCAST 0x00000800 +#define MAC_CR_DISRTY 0x00000400 +#define MAC_CR_PADSTR 0x00000100 +#define MAC_CR_BOLMT 0x000000c0 +#define MAC_CR_DFCHK 0x00000020 +#define MAC_CR_TXEN 0x00000008 +#define MAC_CR_RXEN 0x00000004 +#define MAC_CR_RESERVED 0x7f404213 + +enum tx_state { + TX_IDLE, + TX_B, + TX_DATA +}; + +typedef struct { + enum tx_state state; + uint32_t cmd_a; + uint32_t cmd_b; + int buffer_size; + int offset; + int pad; + int fifo_used; + int len; + uint8_t data[2048]; +} LAN9118Packet; + +typedef struct { + SysBusDevice busdev; + VLANClientState *vc; + NICConf conf; + qemu_irq irq; + int mmio_index; + + uint32_t irq_cfg; + uint32_t int_sts; + uint32_t int_en; + uint32_t fifo_int; + uint32_t rx_cfg; + uint32_t tx_cfg; + uint32_t hw_cfg; + uint32_t pmt_ctrl; + uint32_t gpio_cfg; + uint32_t word_swap; + uint32_t free_timer_start; + uint32_t mac_cmd; + uint32_t mac_data; + uint32_t afc_cfg; + uint32_t e2p_cmd; + uint32_t e2p_data; + + uint32_t mac_cr; + uint32_t mac_hashh; + uint32_t mac_hashl; + uint32_t mac_mii_acc; + uint32_t mac_mii_data; + uint32_t mac_flow; + + uint32_t phy_status; + uint32_t phy_control; + uint32_t phy_advertise; + + int eeprom_writable; + uint8_t eeprom[8]; + + int tx_fifo_size; + LAN9118Packet *txp; + LAN9118Packet tx_packet; + + int tx_status_fifo_used; + int tx_status_fifo_head; + uint32_t tx_status_fifo[512]; + + int rx_status_fifo_size; + int rx_status_fifo_used; + int rx_status_fifo_head; + uint32_t rx_status_fifo[896]; + int rx_fifo_size; + int rx_fifo_used; + int rx_fifo_head; + uint32_t rx_fifo[3360]; + int rx_packet_size_head; + int rx_packet_size_tail; + int rx_packet_size[1024]; + + int rxp_offset; + int rxp_size; + int rxp_pad; +} lan9118_state; + +static void lan9118_update(lan9118_state *s) +{ + int level; + + /* TODO: Implement FIFO level IRQs. */ + level = (s->int_sts & s->int_en) != 0; + if ((s->irq_cfg & IRQ_EN) == 0) { + level = 0; + } + qemu_set_irq(s->irq, level); +} + +static void lan9118_mac_changed(lan9118_state *s) +{ + qemu_format_nic_info_str(s->vc, s->conf.macaddr.a); +} + +static void lan9118_reload_eeprom(lan9118_state *s) +{ + int i; + if (s->eeprom[0] != 0xa5) { + s->e2p_cmd &= ~0x10; + DPRINTF("MACADDR load failed\n"); + return; + } + for (i = 0; i < 6; i++) { + s->conf.macaddr.a[i] = s->eeprom[i + 1]; + } + s->e2p_cmd |= 0x10; + DPRINTF("MACADDR loaded from eeprom\n"); + lan9118_mac_changed(s); +} + +static void phy_update_link(lan9118_state *s) +{ + /* Autonegotiation status mirrors link status. */ + if (s->vc->link_down) { + s->phy_status &= ~0x0024; + } else { + s->phy_status |= 0x0024; + } +} + +static void lan9118_set_link(VLANClientState *vc) +{ + phy_update_link(vc->opaque); +} + +static void phy_reset(lan9118_state *s) +{ + s->phy_status = 0x7805; + s->phy_control = 0x3000; + s->phy_advertise = 0x01e1; + phy_update_link(s); +} + +static void lan9118_reset(DeviceState *d) +{ + lan9118_state *s = FROM_SYSBUS(lan9118_state, sysbus_from_qdev(d)); + + s->irq_cfg &= ~(IRQ_TYPE | IRQ_POL); + s->int_sts = 0; + s->int_en = 0; + s->fifo_int = 0x48000000; + s->rx_cfg = 0; + s->tx_cfg = 0; + s->hw_cfg = 0x00050000; + s->pmt_ctrl &= 0x45; + s->gpio_cfg = 0; + s->txp->fifo_used = 0; + s->txp->state = TX_IDLE; + s->txp->cmd_a = 0xffffffffu; + s->txp->cmd_b = 0xffffffffu; + s->txp->len = 0; + s->txp->fifo_used = 0; + s->tx_fifo_size = 4608; + s->tx_status_fifo_used = 0; + s->rx_status_fifo_size = 704; + s->rx_fifo_size = 2640; + s->rx_fifo_used = 0; + s->rx_status_fifo_size = 176; + s->rx_status_fifo_used = 0; + s->rxp_offset = 0; + s->rxp_size = 0; + s->rxp_pad = 0; + s->rx_packet_size_tail = s->rx_packet_size_head; + s->rx_packet_size[s->rx_packet_size_head] = 0; + s->mac_cmd = 0; + s->mac_data = 0; + s->afc_cfg = 0; + s->e2p_cmd = 0; + s->e2p_data = 0; + s->free_timer_start = qemu_get_clock(vm_clock) / 40; + + s->mac_cr = MAC_CR_PRMS; + s->mac_hashh = 0; + s->mac_hashl = 0; + s->mac_mii_acc = 0; + s->mac_mii_data = 0; + s->mac_flow = 0; + + phy_reset(s); + + s->eeprom_writable = 0; + lan9118_reload_eeprom(s); +} + +static int lan9118_can_receive(VLANClientState *vc) +{ + return 1; +} + +static void rx_fifo_push(lan9118_state *s, uint32_t val) +{ + int fifo_pos; + fifo_pos = s->rx_fifo_head + s->rx_fifo_used; + if (fifo_pos >= s->rx_fifo_size) + fifo_pos -= s->rx_fifo_size; + s->rx_fifo[fifo_pos] = val; + s->rx_fifo_used++; +} + +/* Return nonzero if the packet is accepted by the filter. */ +static int lan9118_filter(lan9118_state *s, const uint8_t *addr) +{ + int multicast; + uint32_t hash; + + if (s->mac_cr & MAC_CR_PRMS) { + return 1; + } + if (addr[0] == 0xff && addr[1] == 0xff && addr[2] == 0xff && + addr[3] == 0xff && addr[4] == 0xff && addr[5] == 0xff) { + return (s->mac_cr & MAC_CR_BCAST) == 0; + } + + multicast = addr[0] & 1; + if (multicast &&s->mac_cr & MAC_CR_MCPAS) { + return 1; + } + if (multicast ? (s->mac_cr & MAC_CR_HPFILT) == 0 + : (s->mac_cr & MAC_CR_HO) == 0) { + /* Exact matching. */ + hash = memcmp(addr, s->conf.macaddr.a, 6); + if (s->mac_cr & MAC_CR_INVFILT) { + return hash != 0; + } else { + return hash == 0; + } + } else { + /* Hash matching */ + hash = (crc32(~0, addr, 6) >> 26); + if (hash & 0x20) { + return (s->mac_hashh >> (hash & 0x1f)) & 1; + } else { + return (s->mac_hashl >> (hash & 0x1f)) & 1; + } + } +} + +static ssize_t lan9118_receive(VLANClientState *vc, const uint8_t *buf, + size_t size) +{ + lan9118_state *s = vc->opaque; + int fifo_len; + int offset; + int src_pos; + int n; + int filter; + uint32_t val; + uint32_t crc; + uint32_t status; + + if ((s->mac_cr & MAC_CR_RXEN) == 0) { + return -1; + } + + if (size >= 2048 || size < 14) { + return -1; + } + + /* TODO: Implement FIFO overflow notification. */ + if (s->rx_status_fifo_used == s->rx_status_fifo_size) { + return -1; + } + + filter = lan9118_filter(s, buf); + if (!filter && (s->mac_cr & MAC_CR_RXALL) == 0) { + return size; + } + + offset = (s->rx_cfg >> 8) & 0x1f; + n = offset & 3; + fifo_len = (size + n + 3) >> 2; + /* Add a word for the CRC. */ + fifo_len++; + if (s->rx_fifo_size - s->rx_fifo_used < fifo_len) { + return -1; + } + + DPRINTF("Got packet len:%d fifo:%d filter:%s\n", + (int)size, fifo_len, filter ? "pass" : "fail"); + val = 0; + crc = bswap32(crc32(~0, buf, size)); + for (src_pos = 0; src_pos < size; src_pos++) { + val = (val >> 8) | ((uint32_t)buf[src_pos] << 24); + n++; + if (n == 4) { + n = 0; + rx_fifo_push(s, val); + val = 0; + } + } + if (n) { + val >>= ((4 - n) * 8); + val |= crc << (n * 8); + rx_fifo_push(s, val); + val = crc >> ((4 - n) * 8); + rx_fifo_push(s, val); + } else { + rx_fifo_push(s, crc); + } + n = s->rx_status_fifo_head + s->rx_status_fifo_used; + if (n >= s->rx_status_fifo_size) { + n -= s->rx_status_fifo_size; + } + s->rx_packet_size[s->rx_packet_size_tail] = fifo_len; + s->rx_packet_size_tail = (s->rx_packet_size_tail + 1023) & 1023; + s->rx_status_fifo_used++; + + status = (size + 4) << 16; + if (buf[0] == 0xff && buf[1] == 0xff && buf[2] == 0xff && + buf[3] == 0xff && buf[4] == 0xff && buf[5] == 0xff) { + status |= 0x00002000; + } else if (buf[0] & 1) { + status |= 0x00000400; + } + if (!filter) { + status |= 0x40000000; + } + s->rx_status_fifo[n] = status; + + if (s->rx_status_fifo_used > (s->fifo_int & 0xff)) { + s->int_sts |= RSFL_INT; + } + lan9118_update(s); + + return size; +} + +static uint32_t rx_fifo_pop(lan9118_state *s) +{ + int n; + uint32_t val; + + if (s->rxp_size == 0 && s->rxp_pad == 0) { + s->rxp_size = s->rx_packet_size[s->rx_packet_size_head]; + s->rx_packet_size[s->rx_packet_size_head] = 0; + if (s->rxp_size != 0) { + s->rx_packet_size_head = (s->rx_packet_size_head + 1023) & 1023; + s->rxp_offset = (s->rx_cfg >> 10) & 7; + n = s->rxp_offset + s->rxp_size; + switch (s->rx_cfg >> 30) { + case 1: + n = (-n) & 3; + break; + case 2: + n = (-n) & 7; + break; + default: + n = 0; + break; + } + s->rxp_pad = n; + DPRINTF("Pop packet size:%d offset:%d pad: %d\n", + s->rxp_size, s->rxp_offset, s->rxp_pad); + } + } + if (s->rxp_offset > 0) { + s->rxp_offset--; + val = 0; + } else if (s->rxp_size > 0) { + s->rxp_size--; + val = s->rx_fifo[s->rx_fifo_head++]; + if (s->rx_fifo_head >= s->rx_fifo_size) { + s->rx_fifo_head -= s->rx_fifo_size; + } + s->rx_fifo_used--; + } else if (s->rxp_pad > 0) { + s->rxp_pad--; + val = 0; + } else { + DPRINTF("RX underflow\n"); + s->int_sts |= RXE_INT; + val = 0; + } + lan9118_update(s); + return val; +} + +static void do_tx_packet(lan9118_state *s) +{ + int n; + uint32_t status; + + /* FIXME: Honor TX disable, and allow queueing of packets. */ + if (s->phy_control & 0x4000) { + /* This assumes the receive routine doesn't touch the VLANClient. */ + lan9118_receive(s->vc, s->txp->data, s->txp->len); + } else { + qemu_send_packet(s->vc, s->txp->data, s->txp->len); + } + s->txp->fifo_used = 0; + + if (s->tx_status_fifo_used == 512) { + /* Status FIFO full */ + return; + } + /* Add entry to status FIFO. */ + status = s->txp->cmd_b & 0xffff0000u; + DPRINTF("Sent packet tag:%04x len %d\n", status >> 16, s->txp->len); + n = (s->tx_status_fifo_head + s->tx_status_fifo_used) & 511; + s->tx_status_fifo[n] = status; + s->tx_status_fifo_used++; + if (s->tx_status_fifo_used == 512) { + s->int_sts |= TSFF_INT; + /* TODO: Stop transmission. */ + } +} + +static uint32_t rx_status_fifo_pop(lan9118_state *s) +{ + uint32_t val; + + val = s->rx_status_fifo[s->rx_status_fifo_head]; + if (s->rx_status_fifo_used != 0) { + s->rx_status_fifo_used--; + s->rx_status_fifo_head++; + if (s->rx_status_fifo_head >= s->rx_status_fifo_size) { + s->rx_status_fifo_head -= s->rx_status_fifo_size; + } + /* ??? What value should be returned when the FIFO is empty? */ + DPRINTF("RX status pop 0x%08x\n", val); + } + return val; +} + +static uint32_t tx_status_fifo_pop(lan9118_state *s) +{ + uint32_t val; + + val = s->tx_status_fifo[s->tx_status_fifo_head]; + if (s->tx_status_fifo_used != 0) { + s->tx_status_fifo_used--; + s->tx_status_fifo_head = (s->tx_status_fifo_head + 1) & 511; + /* ??? What value should be returned when the FIFO is empty? */ + } + return val; +} + +static void tx_fifo_push(lan9118_state *s, uint32_t val) +{ + int n; + + if (s->txp->fifo_used == s->tx_fifo_size) { + s->int_sts |= TDFO_INT; + return; + } + switch (s->txp->state) { + case TX_IDLE: + s->txp->cmd_a = val & 0x831f37ff; + s->txp->fifo_used++; + s->txp->state = TX_B; + break; + case TX_B: + if (s->txp->cmd_a & 0x2000) { + /* First segment */ + s->txp->cmd_b = val; + s->txp->fifo_used++; + s->txp->buffer_size = s->txp->cmd_a & 0x7ff; + s->txp->offset = (s->txp->cmd_a >> 16) & 0x1f; + /* End alignment does not include command words. */ + n = (s->txp->buffer_size + s->txp->offset + 3) >> 2; + switch ((n >> 24) & 3) { + case 1: + n = (-n) & 3; + break; + case 2: + n = (-n) & 7; + break; + default: + n = 0; + } + s->txp->pad = n; + s->txp->len = 0; + } + DPRINTF("Block len:%d offset:%d pad:%d cmd %08x\n", + s->txp->buffer_size, s->txp->offset, s->txp->pad, + s->txp->cmd_a); + s->txp->state = TX_DATA; + break; + case TX_DATA: + if (s->txp->offset >= 4) { + s->txp->offset -= 4; + break; + } + if (s->txp->buffer_size <= 0 && s->txp->pad != 0) { + s->txp->pad--; + } else { + n = 4; + while (s->txp->offset) { + val >>= 8; + n--; + s->txp->offset--; + } + /* Documentation is somewhat unclear on the ordering of bytes + in FIFO words. Empirical results show it to be little-endian. + */ + /* TODO: FIFO overflow checking. */ + while (n--) { + s->txp->data[s->txp->len] = val & 0xff; + s->txp->len++; + val >>= 8; + s->txp->buffer_size--; + } + s->txp->fifo_used++; + } + if (s->txp->buffer_size <= 0 && s->txp->pad == 0) { + if (s->txp->cmd_a & 0x1000) { + do_tx_packet(s); + } + if (s->txp->cmd_a & 0x80000000) { + s->int_sts |= TX_IOC_INT; + } + s->txp->state = TX_IDLE; + } + break; + } +} + +static uint32_t do_phy_read(lan9118_state *s, int reg) +{ + switch (reg) { + case 0: /* Basic Control */ + return s->phy_control; + case 1: /* Basic Status */ + return s->phy_status; + case 2: /* ID1 */ + return 0x0007; + case 3: /* ID2 */ + return 0xc0d1; + case 4: /* Auto-neg advertisment */ + return s->phy_advertise; + case 5: /* Auto-neg Link Partner Ability */ + return 0x0f71; + case 6: /* Auto-neg Expansion */ + return 1; + /* TODO 17, 18, 27, 29, 30, 31 */ + default: + BADF("PHY read reg %d\n", reg); + return 0; + } +} + +static void do_phy_write(lan9118_state *s, int reg, uint32_t val) +{ + switch (reg) { + case 0: /* Basic Control */ + if (val & 0x8000) { + phy_reset(s); + break; + } + s->phy_control = val & 0x7980; + /* Complete autonegotiation imediately. */ + if (val & 0x1000) { + s->phy_status |= 0x0020; + } + break; + case 4: /* Auto-neg advertisment */ + s->phy_advertise = (val & 0x2d7f) | 0x80; + break; + /* TODO 17, 18, 27, 29, 30, 31 */ + default: + BADF("PHY write reg %d = 0x%04x\n", reg, val); + } +} + +static void do_mac_write(lan9118_state *s, int reg, uint32_t val) +{ + switch (reg) { + case MAC_CR: + if ((s->mac_cr & MAC_CR_RXEN) != 0 && (val & MAC_CR_RXEN) == 0) { + s->int_sts |= RXSTOP_INT; + } + s->mac_cr = val & ~MAC_CR_RESERVED; + DPRINTF("MAC_CR: %08x\n", val); + break; + case MAC_ADDRH: + s->conf.macaddr.a[4] = val & 0xff; + s->conf.macaddr.a[5] = (val >> 8) & 0xff; + lan9118_mac_changed(s); + break; + case MAC_ADDRL: + s->conf.macaddr.a[0] = val & 0xff; + s->conf.macaddr.a[1] = (val >> 8) & 0xff; + s->conf.macaddr.a[2] = (val >> 16) & 0xff; + s->conf.macaddr.a[3] = (val >> 24) & 0xff; + lan9118_mac_changed(s); + break; + case MAC_HASHH: + s->mac_hashh = val; + break; + case MAC_HASHL: + s->mac_hashl = val; + break; + case MAC_MII_ACC: + s->mac_mii_acc = val & 0xffc2; + if (val & 2) { + DPRINTF("PHY write %d = 0x%04x\n", + (val >> 6) & 0x1f, s->mac_mii_data); + do_phy_write(s, (val >> 6) & 0x1f, s->mac_mii_data); + } else { + s->mac_mii_data = do_phy_read(s, (val >> 6) & 0x1f); + DPRINTF("PHY read %d = 0x%04x\n", + (val >> 6) & 0x1f, s->mac_mii_data); + } + break; + case MAC_MII_DATA: + s->mac_mii_data = val & 0xffff; + break; + case MAC_FLOW: + s->mac_flow = val & 0xffff0000; + break; + default: + hw_error("lan9118: Unimplemented MAC register write: %d = 0x%x\n", + s->mac_cmd & 0xf, val); + } +} + +static uint32_t do_mac_read(lan9118_state *s, int reg) +{ + switch (reg) { + case MAC_CR: + return s->mac_cr; + case MAC_ADDRH: + return s->conf.macaddr.a[4] | (s->conf.macaddr.a[5] << 8); + case MAC_ADDRL: + return s->conf.macaddr.a[0] | (s->conf.macaddr.a[1] << 8) + | (s->conf.macaddr.a[2] << 16) | (s->conf.macaddr.a[3] << 24); + case MAC_HASHH: + return s->mac_hashh; + break; + case MAC_HASHL: + return s->mac_hashl; + break; + case MAC_MII_ACC: + return s->mac_mii_acc; + case MAC_MII_DATA: + return s->mac_mii_data; + case MAC_FLOW: + return s->mac_flow; + default: + hw_error("lan9118: Unimplemented MAC register read: %d\n", + s->mac_cmd & 0xf); + } +} + +static void lan9118_eeprom_cmd(lan9118_state *s, int cmd, int addr) +{ + s->e2p_cmd = (s->e2p_cmd & 0x10) | (cmd << 28) | addr; + switch (cmd) { + case 0: + s->e2p_data = s->eeprom[addr]; + DPRINTF("EEPROM Read %d = 0x%02x\n", addr, s->e2p_data); + break; + case 1: + s->eeprom_writable = 0; + DPRINTF("EEPROM Write Disable\n"); + break; + case 2: /* EWEN */ + s->eeprom_writable = 1; + DPRINTF("EEPROM Write Enable\n"); + break; + case 3: /* WRITE */ + if (s->eeprom_writable) { + s->eeprom[addr] &= s->e2p_data; + DPRINTF("EEPROM Write %d = 0x%02x\n", addr, s->e2p_data); + } else { + DPRINTF("EEPROM Write %d (ignored)\n", addr); + } + break; + case 4: /* WRAL */ + if (s->eeprom_writable) { + for (addr = 0; addr < 128; addr++) { + s->eeprom[addr] &= s->e2p_data; + } + DPRINTF("EEPROM Write All 0x%02x\n", s->e2p_data); + } else { + DPRINTF("EEPROM Write All (ignored)\n"); + } + case 5: /* ERASE */ + if (s->eeprom_writable) { + s->eeprom[addr] = 0xff; + DPRINTF("EEPROM Erase %d\n", addr); + } else { + DPRINTF("EEPROM Erase %d (ignored)\n", addr); + } + break; + case 6: /* ERAL */ + if (s->eeprom_writable) { + memset(s->eeprom, 0xff, 128); + DPRINTF("EEPROM Erase All\n"); + } else { + DPRINTF("EEPROM Erase All (ignored)\n"); + } + break; + case 7: /* RELOAD */ + lan9118_reload_eeprom(s); + break; + } +} + +static void lan9118_writel(void *opaque, target_phys_addr_t offset, + uint32_t val) +{ + lan9118_state *s = (lan9118_state *)opaque; + offset &= 0xff; + + //DPRINTF("Write reg 0x%02x = 0x%08x\n", (int)offset, val); + if (offset >= 0x20 && offset < 0x40) { + /* TX FIFO */ + tx_fifo_push(s, val); + return; + } + switch (offset) { + case CSR_IRQ_CFG: + /* TODO: Implement interrupt deassertion intervals. */ + s->irq_cfg = (val & IRQ_EN); + break; + case CSR_INT_STS: + s->int_sts &= ~val; + break; + case CSR_INT_EN: + s->int_en = val & ~RESERVED_INT; + s->int_sts |= val & SW_INT; + break; + case CSR_FIFO_INT: + DPRINTF("FIFO INT levels %08x\n", val); + s->fifo_int = val; + break; + case CSR_RX_CFG: + if (val & 0x8000) { + /* RX_DUMP */ + s->rx_fifo_used = 0; + s->rx_status_fifo_used = 0; + s->rx_packet_size_tail = s->rx_packet_size_head; + s->rx_packet_size[s->rx_packet_size_head] = 0; + } + s->rx_cfg = val & 0xcfff1ff0; + break; + case CSR_TX_CFG: + if (val & 0x8000) { + s->tx_status_fifo_used = 0; + } + if (val & 0x4000) { + s->txp->state = TX_IDLE; + s->txp->fifo_used = 0; + s->txp->cmd_a = 0xffffffff; + } + s->tx_cfg = val & 6; + break; + case CSR_HW_CFG: + if (val & 1) { + /* SRST */ + lan9118_reset(&s->busdev.qdev); + } else { + s->hw_cfg = val & 0x003f300; + } + break; + case CSR_RX_DP_CTRL: + if (val & 0x80000000) { + /* Skip forward to next packet. */ + s->rxp_pad = 0; + s->rxp_offset = 0; + if (s->rxp_size == 0) { + /* Pop a word to start the next packet. */ + rx_fifo_pop(s); + s->rxp_pad = 0; + s->rxp_offset = 0; + } + s->rx_fifo_head += s->rxp_size; + if (s->rx_fifo_head >= s->rx_fifo_size) { + s->rx_fifo_head -= s->rx_fifo_size; + } + } + break; + case CSR_PMT_CTRL: + if (val & 0x400) { + phy_reset(s); + } + s->pmt_ctrl &= ~0x34e; + s->pmt_ctrl |= (val & 0x34e); + break; + case CSR_GPIO_CFG: + /* Probably just enabling LEDs. */ + s->gpio_cfg = val & 0x7777071f; + break; + case CSR_WORD_SWAP: + /* Ignored because we're in 32-bit mode. */ + s->word_swap = val; + break; + case CSR_MAC_CSR_CMD: + s->mac_cmd = val & 0x4000000f; + if (val & 0x80000000) { + if (val & 0x40000000) { + s->mac_data = do_mac_read(s, val & 0xf); + DPRINTF("MAC read %d = 0x%08x\n", val & 0xf, s->mac_data); + } else { + DPRINTF("MAC write %d = 0x%08x\n", val & 0xf, s->mac_data); + do_mac_write(s, val & 0xf, s->mac_data); + } + } + break; + case CSR_MAC_CSR_DATA: + s->mac_data = val; + break; + case CSR_AFC_CFG: + s->afc_cfg = val & 0x00ffffff; + break; + case CSR_E2P_CMD: + lan9118_eeprom_cmd(s, (val >> 28) & 7, val & 0xff); + break; + case CSR_E2P_DATA: + s->e2p_data = val & 0xff; + break; + + default: + hw_error("lan9118_write: Bad reg 0x%x = %x\n", (int)offset, val); + break; + } + lan9118_update(s); +} + +static uint32_t lan9118_readl(void *opaque, target_phys_addr_t offset) +{ + lan9118_state *s = (lan9118_state *)opaque; + + //DPRINTF("Read reg 0x%02x\n", (int)offset); + if (offset < 0x20) { + /* RX FIFO */ + return rx_fifo_pop(s); + } + switch (offset) { + case 0x40: + return rx_status_fifo_pop(s); + case 0x44: + return s->rx_status_fifo[s->tx_status_fifo_head]; + case 0x48: + return tx_status_fifo_pop(s); + case 0x4c: + return s->tx_status_fifo[s->tx_status_fifo_head]; + case CSR_ID_REV: + return 0x01180001; + case CSR_IRQ_CFG: + return s->irq_cfg; + case CSR_INT_STS: + return s->int_sts; + case CSR_INT_EN: + return s->int_en; + case CSR_BYTE_TEST: + return 0x87654321; + case CSR_FIFO_INT: + return s->fifo_int; + case CSR_RX_CFG: + return s->rx_cfg; + case CSR_TX_CFG: + return s->tx_cfg; + case CSR_HW_CFG: + return s->hw_cfg | 0x4; + case CSR_RX_DP_CTRL: + return 0; + case CSR_RX_FIFO_INF: + return (s->rx_status_fifo_used << 16) | (s->rx_fifo_used << 2); + case CSR_TX_FIFO_INF: + return (s->tx_status_fifo_used << 16) + | (s->tx_fifo_size - s->txp->fifo_used); + case CSR_PMT_CTRL: + return s->pmt_ctrl; + case CSR_GPIO_CFG: + return s->gpio_cfg; + case CSR_WORD_SWAP: + return s->word_swap; + case CSR_FREE_RUN: + return (qemu_get_clock(vm_clock) / 40) - s->free_timer_start; + case CSR_RX_DROP: + /* TODO: Implement dropped frames counter. */ + return 0; + case CSR_MAC_CSR_CMD: + return s->mac_cmd; + case CSR_MAC_CSR_DATA: + return s->mac_data; + case CSR_AFC_CFG: + return s->afc_cfg; + case CSR_E2P_CMD: + return s->e2p_cmd; + case CSR_E2P_DATA: + return s->e2p_data; + } + hw_error("lan9118_read: Bad reg 0x%x\n", (int)offset); + return 0; +} + +static CPUReadMemoryFunc * const lan9118_readfn[] = { + lan9118_readl, + lan9118_readl, + lan9118_readl +}; + +static CPUWriteMemoryFunc * const lan9118_writefn[] = { + lan9118_writel, + lan9118_writel, + lan9118_writel +}; + +static void lan9118_cleanup(VLANClientState *vc) +{ + lan9118_state *s = vc->opaque; + + s->vc = NULL; +} + +static int lan9118_init1(SysBusDevice *dev) +{ + lan9118_state *s = FROM_SYSBUS(lan9118_state, dev); + int i; + + s->mmio_index = cpu_register_io_memory(lan9118_readfn, + lan9118_writefn, s); + sysbus_init_mmio(dev, 0x100, s->mmio_index); + sysbus_init_irq(dev, &s->irq); + qemu_macaddr_default_if_unset(&s->conf.macaddr); + + s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_NIC, + s->conf.vlan, s->conf.peer, + dev->qdev.info->name, dev->qdev.id, + lan9118_can_receive, lan9118_receive, NULL, + NULL, lan9118_cleanup, s); + s->vc->link_status_changed = lan9118_set_link; + qemu_format_nic_info_str(s->vc, s->conf.macaddr.a); + s->eeprom[0] = 0xa5; + for (i = 0; i < 6; i++) { + s->eeprom[i + 1] = s->conf.macaddr.a[i]; + } + s->pmt_ctrl = 1; + s->txp = &s->tx_packet; + + /* ??? Save/restore. */ + return 0; +} + +static SysBusDeviceInfo lan9118_info = { + .init = lan9118_init1, + .qdev.name = "lan9118", + .qdev.size = sizeof(lan9118_state), + .qdev.reset = lan9118_reset, + .qdev.props = (Property[]) { + DEFINE_NIC_PROPERTIES(lan9118_state, conf), + DEFINE_PROP_END_OF_LIST(), + } +}; + +static void lan9118_register_devices(void) +{ + sysbus_register_withprop(&lan9118_info); +} + +/* Legacy helper function. Should go away when machine config files are + implemented. */ +void lan9118_init(NICInfo *nd, uint32_t base, qemu_irq irq) +{ + DeviceState *dev; + SysBusDevice *s; + + qemu_check_nic_model(nd, "lan9118"); + dev = qdev_create(NULL, "lan9118"); + qdev_set_nic_properties(dev, nd); + qdev_init_nofail(dev); + s = sysbus_from_qdev(dev); + sysbus_mmio_map(s, 0, base); + sysbus_connect_irq(s, 0, irq); +} + +device_init(lan9118_register_devices) -- 2.7.4